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Finding the Fourth Proportional to 658,708.40, 988,062.95 and 185,393.76

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Solution

The fourth proportional to 658,708.40, 988,062.95 and 185,393.76 is: 278,090.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,708.40 : 988,062.95 = 185,393.76 : x
  2. Step 2: Convert to fraction form
    658,708.40/988,062.95 = 185,393.76/x
  3. Step 3: Cross multiply
    658,708.40x = 988,062.95 × 185,393.76
  4. Step 4: Simplify right side
    658,708.40x = 183,180,705,417.19
  5. Step 5: Solve for x
    x = 183,180,705,417.19/658,708.40
  6. Step 6: Final answer
    x = 278,090.74

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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.