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Finding the Fourth Proportional to 249,988.05, 375,041.52 and 81,509.49

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Solution

The fourth proportional to 249,988.05, 375,041.52 and 81,509.49 is: 122,283.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,988.05 : 375,041.52 = 81,509.49 : x
  2. Step 2: Convert to fraction form
    249,988.05/375,041.52 = 81,509.49/x
  3. Step 3: Cross multiply
    249,988.05x = 375,041.52 × 81,509.49
  4. Step 4: Simplify right side
    249,988.05x = 30,569,443,024.02
  5. Step 5: Solve for x
    x = 30,569,443,024.02/249,988.05
  6. Step 6: Final answer
    x = 122,283.62

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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.