Home / 256,608,012.45-384,912,018.68-127,235,590.05

Finding the Fourth Proportional to 256,608,012.45, 384,912,018.68 and 127,235,590.05

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Solution

The fourth proportional to 256,608,012.45, 384,912,018.68 and 127,235,590.05 is: 190,853,385.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,608,012.45 : 384,912,018.68 = 127,235,590.05 : x
  2. Step 2: Convert to fraction form
    256,608,012.45/384,912,018.68 = 127,235,590.05/x
  3. Step 3: Cross multiply
    256,608,012.45x = 384,912,018.68 × 127,235,590.05
  4. Step 4: Simplify right side
    256,608,012.45x = 48,974,507,813,450,248
  5. Step 5: Solve for x
    x = 48,974,507,813,450,248/256,608,012.45
  6. Step 6: Final answer
    x = 190,853,385.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.