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Finding the Fourth Proportional to 288,547.55, 432,821.33 and 155,687.30

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Solution

The fourth proportional to 288,547.55, 432,821.33 and 155,687.30 is: 233,530.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,547.55 : 432,821.33 = 155,687.30 : x
  2. Step 2: Convert to fraction form
    288,547.55/432,821.33 = 155,687.30/x
  3. Step 3: Cross multiply
    288,547.55x = 432,821.33 × 155,687.30
  4. Step 4: Simplify right side
    288,547.55x = 67,384,783,471.67
  5. Step 5: Solve for x
    x = 67,384,783,471.67/288,547.55
  6. Step 6: Final answer
    x = 233,530.95

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Similar ratio
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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.