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Finding the Fourth Proportional to 530,090.16, 731,516.76 and 288,374.82

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Solution

The fourth proportional to 530,090.16, 731,516.76 and 288,374.82 is: 397,953.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,090.16 : 731,516.76 = 288,374.82 : x
  2. Step 2: Convert to fraction form
    530,090.16/731,516.76 = 288,374.82/x
  3. Step 3: Cross multiply
    530,090.16x = 731,516.76 × 288,374.82
  4. Step 4: Simplify right side
    530,090.16x = 210,951,013,991.98
  5. Step 5: Solve for x
    x = 210,951,013,991.98/530,090.16
  6. Step 6: Final answer
    x = 397,953.08

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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.