Home / 256,953.13-385,208.20-99,292.21

Finding the Fourth Proportional to 256,953.13, 385,208.20 and 99,292.21

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Solution

The fourth proportional to 256,953.13, 385,208.20 and 99,292.21 is: 148,852.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,953.13 : 385,208.20 = 99,292.21 : x
  2. Step 2: Convert to fraction form
    256,953.13/385,208.20 = 99,292.21/x
  3. Step 3: Cross multiply
    256,953.13x = 385,208.20 × 99,292.21
  4. Step 4: Simplify right side
    256,953.13x = 38,248,173,488.12
  5. Step 5: Solve for x
    x = 38,248,173,488.12/256,953.13
  6. Step 6: Final answer
    x = 148,852.72

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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.