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Finding the Fourth Proportional to 292,238.40, 438,401.40 and 123,758.40

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Solution

The fourth proportional to 292,238.40, 438,401.40 and 123,758.40 is: 185,656.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,238.40 : 438,401.40 = 123,758.40 : x
  2. Step 2: Convert to fraction form
    292,238.40/438,401.40 = 123,758.40/x
  3. Step 3: Cross multiply
    292,238.40x = 438,401.40 × 123,758.40
  4. Step 4: Simplify right side
    292,238.40x = 54,255,855,821.76
  5. Step 5: Solve for x
    x = 54,255,855,821.76/292,238.40
  6. Step 6: Final answer
    x = 185,656.15

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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.