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Finding the Fourth Proportional to 249,285.76, 343,897.92 and 168,688

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Solution

The fourth proportional to 249,285.76, 343,897.92 and 168,688 is: 232,710.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,285.76 : 343,897.92 = 168,688 : x
  2. Step 2: Convert to fraction form
    249,285.76/343,897.92 = 168,688/x
  3. Step 3: Cross multiply
    249,285.76x = 343,897.92 × 168,688
  4. Step 4: Simplify right side
    249,285.76x = 58,011,452,328.96
  5. Step 5: Solve for x
    x = 58,011,452,328.96/249,285.76
  6. Step 6: Final answer
    x = 232,710.65

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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.