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Finding the Fourth Proportional to 249,430.80, 374,194.80 and 99,645.60

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Solution

The fourth proportional to 249,430.80, 374,194.80 and 99,645.60 is: 149,487.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,430.80 : 374,194.80 = 99,645.60 : x
  2. Step 2: Convert to fraction form
    249,430.80/374,194.80 = 99,645.60/x
  3. Step 3: Cross multiply
    249,430.80x = 374,194.80 × 99,645.60
  4. Step 4: Simplify right side
    249,430.80x = 37,286,865,362.88
  5. Step 5: Solve for x
    x = 37,286,865,362.88/249,430.80
  6. Step 6: Final answer
    x = 149,487.82

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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.