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Finding the Fourth Proportional to 371,139.12, 556,711.80 and 104,893.68

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Solution

The fourth proportional to 371,139.12, 556,711.80 and 104,893.68 is: 157,341.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,139.12 : 556,711.80 = 104,893.68 : x
  2. Step 2: Convert to fraction form
    371,139.12/556,711.80 = 104,893.68/x
  3. Step 3: Cross multiply
    371,139.12x = 556,711.80 × 104,893.68
  4. Step 4: Simplify right side
    371,139.12x = 58,395,549,401.42
  5. Step 5: Solve for x
    x = 58,395,549,401.42/371,139.12
  6. Step 6: Final answer
    x = 157,341.40

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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.