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Finding the Fourth Proportional to 539,020, 808,526.76 and 139,659.76

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Solution

The fourth proportional to 539,020, 808,526.76 and 139,659.76 is: 209,488.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,020 : 808,526.76 = 139,659.76 : x
  2. Step 2: Convert to fraction form
    539,020/808,526.76 = 139,659.76/x
  3. Step 3: Cross multiply
    539,020x = 808,526.76 × 139,659.76
  4. Step 4: Simplify right side
    539,020x = 112,918,653,255.18
  5. Step 5: Solve for x
    x = 112,918,653,255.18/539,020
  6. Step 6: Final answer
    x = 209,488.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.