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Finding the Fourth Proportional to 371,423.88, 557,132.58 and 90,941.40

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Solution

The fourth proportional to 371,423.88, 557,132.58 and 90,941.40 is: 136,411.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,423.88 : 557,132.58 = 90,941.40 : x
  2. Step 2: Convert to fraction form
    371,423.88/557,132.58 = 90,941.40/x
  3. Step 3: Cross multiply
    371,423.88x = 557,132.58 × 90,941.40
  4. Step 4: Simplify right side
    371,423.88x = 50,666,416,810.81
  5. Step 5: Solve for x
    x = 50,666,416,810.81/371,423.88
  6. Step 6: Final answer
    x = 136,411.31

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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.