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Finding the Fourth Proportional to 530,373.52, 731,730.70 and 300,903.76

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Solution

The fourth proportional to 530,373.52, 731,730.70 and 300,903.76 is: 415,142.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,373.52 : 731,730.70 = 300,903.76 : x
  2. Step 2: Convert to fraction form
    530,373.52/731,730.70 = 300,903.76/x
  3. Step 3: Cross multiply
    530,373.52x = 731,730.70 × 300,903.76
  4. Step 4: Simplify right side
    530,373.52x = 220,180,518,937.43
  5. Step 5: Solve for x
    x = 220,180,518,937.43/530,373.52
  6. Step 6: Final answer
    x = 415,142.37

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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.