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Finding the Fourth Proportional to 307,526.68, 424,386.42 and 173,390.68

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Solution

The fourth proportional to 307,526.68, 424,386.42 and 173,390.68 is: 239,278.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,526.68 : 424,386.42 = 173,390.68 : x
  2. Step 2: Convert to fraction form
    307,526.68/424,386.42 = 173,390.68/x
  3. Step 3: Cross multiply
    307,526.68x = 424,386.42 × 173,390.68
  4. Step 4: Simplify right side
    307,526.68x = 73,584,649,946.57
  5. Step 5: Solve for x
    x = 73,584,649,946.57/307,526.68
  6. Step 6: Final answer
    x = 239,278.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.