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Finding the Fourth Proportional to 530,095.96, 731,291.52 and 315,113.86

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Solution

The fourth proportional to 530,095.96, 731,291.52 and 315,113.86 is: 434,713.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,095.96 : 731,291.52 = 315,113.86 : x
  2. Step 2: Convert to fraction form
    530,095.96/731,291.52 = 315,113.86/x
  3. Step 3: Cross multiply
    530,095.96x = 731,291.52 × 315,113.86
  4. Step 4: Simplify right side
    530,095.96x = 230,440,093,652.47
  5. Step 5: Solve for x
    x = 230,440,093,652.47/530,095.96
  6. Step 6: Final answer
    x = 434,713.92

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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.