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Finding the Fourth Proportional to 581,207.40, 870,255.90 and 369,700.20

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Solution

The fourth proportional to 581,207.40, 870,255.90 and 369,700.20 is: 553,561.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    581,207.40 : 870,255.90 = 369,700.20 : x
  2. Step 2: Convert to fraction form
    581,207.40/870,255.90 = 369,700.20/x
  3. Step 3: Cross multiply
    581,207.40x = 870,255.90 × 369,700.20
  4. Step 4: Simplify right side
    581,207.40x = 321,733,780,281.18
  5. Step 5: Solve for x
    x = 321,733,780,281.18/581,207.40
  6. Step 6: Final answer
    x = 553,561.05

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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.