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Finding the Fourth Proportional to 249,041.12, 343,676.64 and 135,864.64

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Solution

The fourth proportional to 249,041.12, 343,676.64 and 135,864.64 is: 187,493.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,041.12 : 343,676.64 = 135,864.64 : x
  2. Step 2: Convert to fraction form
    249,041.12/343,676.64 = 135,864.64/x
  3. Step 3: Cross multiply
    249,041.12x = 343,676.64 × 135,864.64
  4. Step 4: Simplify right side
    249,041.12x = 46,693,502,970.01
  5. Step 5: Solve for x
    x = 46,693,502,970.01/249,041.12
  6. Step 6: Final answer
    x = 187,493.15

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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.