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Finding the Fourth Proportional to 249,009.80, 373,287.90 and 91,200.20

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Solution

The fourth proportional to 249,009.80, 373,287.90 and 91,200.20 is: 136,717.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,009.80 : 373,287.90 = 91,200.20 : x
  2. Step 2: Convert to fraction form
    249,009.80/373,287.90 = 91,200.20/x
  3. Step 3: Cross multiply
    249,009.80x = 373,287.90 × 91,200.20
  4. Step 4: Simplify right side
    249,009.80x = 34,043,931,137.58
  5. Step 5: Solve for x
    x = 34,043,931,137.58/249,009.80
  6. Step 6: Final answer
    x = 136,717.23

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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.