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Finding the Fourth Proportional to 530,034.16, 731,439.43 and 288,318.69

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Solution

The fourth proportional to 530,034.16, 731,439.43 and 288,318.69 is: 397,875.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,034.16 : 731,439.43 = 288,318.69 : x
  2. Step 2: Convert to fraction form
    530,034.16/731,439.43 = 288,318.69/x
  3. Step 3: Cross multiply
    530,034.16x = 731,439.43 × 288,318.69
  4. Step 4: Simplify right side
    530,034.16x = 210,887,658,271.95
  5. Step 5: Solve for x
    x = 210,887,658,271.95/530,034.16
  6. Step 6: Final answer
    x = 397,875.60

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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.