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Finding the Fourth Proportional to 385,535.65, 532,039.13 and 215,769.77

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Solution

The fourth proportional to 385,535.65, 532,039.13 and 215,769.77 is: 297,762.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,535.65 : 532,039.13 = 215,769.77 : x
  2. Step 2: Convert to fraction form
    385,535.65/532,039.13 = 215,769.77/x
  3. Step 3: Cross multiply
    385,535.65x = 532,039.13 × 215,769.77
  4. Step 4: Simplify right side
    385,535.65x = 114,797,960,962.35
  5. Step 5: Solve for x
    x = 114,797,960,962.35/385,535.65
  6. Step 6: Final answer
    x = 297,762.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.