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Finding the Fourth Proportional to 530,332.08, 731,616 and 315,349.68

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Solution

The fourth proportional to 530,332.08, 731,616 and 315,349.68 is: 435,038.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,332.08 : 731,616 = 315,349.68 : x
  2. Step 2: Convert to fraction form
    530,332.08/731,616 = 315,349.68/x
  3. Step 3: Cross multiply
    530,332.08x = 731,616 × 315,349.68
  4. Step 4: Simplify right side
    530,332.08x = 230,714,871,482.88
  5. Step 5: Solve for x
    x = 230,714,871,482.88/530,332.08
  6. Step 6: Final answer
    x = 435,038.50

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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.