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Finding the Fourth Proportional to 385,501.20, 578,251.80 and 296,927.70

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Solution

The fourth proportional to 385,501.20, 578,251.80 and 296,927.70 is: 445,391.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,501.20 : 578,251.80 = 296,927.70 : x
  2. Step 2: Convert to fraction form
    385,501.20/578,251.80 = 296,927.70/x
  3. Step 3: Cross multiply
    385,501.20x = 578,251.80 × 296,927.70
  4. Step 4: Simplify right side
    385,501.20x = 171,698,976,994.86
  5. Step 5: Solve for x
    x = 171,698,976,994.86/385,501.20
  6. Step 6: Final answer
    x = 445,391.55

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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.