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Finding the Fourth Proportional to 249,665.70, 374,733.45 and 131,421.90

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Solution

The fourth proportional to 249,665.70, 374,733.45 and 131,421.90 is: 197,256.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,665.70 : 374,733.45 = 131,421.90 : x
  2. Step 2: Convert to fraction form
    249,665.70/374,733.45 = 131,421.90/x
  3. Step 3: Cross multiply
    249,665.70x = 374,733.45 × 131,421.90
  4. Step 4: Simplify right side
    249,665.70x = 49,248,181,992.56
  5. Step 5: Solve for x
    x = 49,248,181,992.56/249,665.70
  6. Step 6: Final answer
    x = 197,256.50

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1.5x scale

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.