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Finding the Fourth Proportional to 532,928.80, 735,419.79 and 291,219.70

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Solution

The fourth proportional to 532,928.80, 735,419.79 and 291,219.70 is: 401,871.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    532,928.80 : 735,419.79 = 291,219.70 : x
  2. Step 2: Convert to fraction form
    532,928.80/735,419.79 = 291,219.70/x
  3. Step 3: Cross multiply
    532,928.80x = 735,419.79 × 291,219.70
  4. Step 4: Simplify right side
    532,928.80x = 214,168,730,617.86
  5. Step 5: Solve for x
    x = 214,168,730,617.86/532,928.80
  6. Step 6: Final answer
    x = 401,871.19

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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.