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Finding the Fourth Proportional to 249,990.60, 375,024.78 and 83,739.72

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Solution

The fourth proportional to 249,990.60, 375,024.78 and 83,739.72 is: 125,622.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,990.60 : 375,024.78 = 83,739.72 : x
  2. Step 2: Convert to fraction form
    249,990.60/375,024.78 = 83,739.72/x
  3. Step 3: Cross multiply
    249,990.60x = 375,024.78 × 83,739.72
  4. Step 4: Simplify right side
    249,990.60x = 31,404,470,070.26
  5. Step 5: Solve for x
    x = 31,404,470,070.26/249,990.60
  6. Step 6: Final answer
    x = 125,622.60

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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.