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Finding the Fourth Proportional to 249,381.76, 374,164.80 and 91,713.28

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Solution

The fourth proportional to 249,381.76, 374,164.80 and 91,713.28 is: 137,603.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,381.76 : 374,164.80 = 91,713.28 : x
  2. Step 2: Convert to fraction form
    249,381.76/374,164.80 = 91,713.28/x
  3. Step 3: Cross multiply
    249,381.76x = 374,164.80 × 91,713.28
  4. Step 4: Simplify right side
    249,381.76x = 34,315,881,068.54
  5. Step 5: Solve for x
    x = 34,315,881,068.54/249,381.76
  6. Step 6: Final answer
    x = 137,603.81

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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.