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Finding the Fourth Proportional to 249,031.98, 343,669.59 and 135,854.64

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Solution

The fourth proportional to 249,031.98, 343,669.59 and 135,854.64 is: 187,482.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,031.98 : 343,669.59 = 135,854.64 : x
  2. Step 2: Convert to fraction form
    249,031.98/343,669.59 = 135,854.64/x
  3. Step 3: Cross multiply
    249,031.98x = 343,669.59 × 135,854.64
  4. Step 4: Simplify right side
    249,031.98x = 46,689,108,428.40
  5. Step 5: Solve for x
    x = 46,689,108,428.40/249,031.98
  6. Step 6: Final answer
    x = 187,482.38

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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.