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Finding the Fourth Proportional to 371,424.32, 557,130.88 and 90,941.60

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Solution

The fourth proportional to 371,424.32, 557,130.88 and 90,941.60 is: 136,411.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,424.32 : 557,130.88 = 90,941.60 : x
  2. Step 2: Convert to fraction form
    371,424.32/557,130.88 = 90,941.60/x
  3. Step 3: Cross multiply
    371,424.32x = 557,130.88 × 90,941.60
  4. Step 4: Simplify right side
    371,424.32x = 50,666,373,636.61
  5. Step 5: Solve for x
    x = 50,666,373,636.61/371,424.32
  6. Step 6: Final answer
    x = 136,411.03

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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.