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Finding the Fourth Proportional to 393,360.76, 590,025.95 and 112,878.01

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Solution

The fourth proportional to 393,360.76, 590,025.95 and 112,878.01 is: 169,312.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,360.76 : 590,025.95 = 112,878.01 : x
  2. Step 2: Convert to fraction form
    393,360.76/590,025.95 = 112,878.01/x
  3. Step 3: Cross multiply
    393,360.76x = 590,025.95 × 112,878.01
  4. Step 4: Simplify right side
    393,360.76x = 66,600,953,044.90
  5. Step 5: Solve for x
    x = 66,600,953,044.90/393,360.76
  6. Step 6: Final answer
    x = 169,312.65

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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.