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Finding the Fourth Proportional to 389,673.60, 537,564.96 and 253,657.92

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Solution

The fourth proportional to 389,673.60, 537,564.96 and 253,657.92 is: 349,927.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,673.60 : 537,564.96 = 253,657.92 : x
  2. Step 2: Convert to fraction form
    389,673.60/537,564.96 = 253,657.92/x
  3. Step 3: Cross multiply
    389,673.60x = 537,564.96 × 253,657.92
  4. Step 4: Simplify right side
    389,673.60x = 136,357,609,618.48
  5. Step 5: Solve for x
    x = 136,357,609,618.48/389,673.60
  6. Step 6: Final answer
    x = 349,927.76

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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.