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Finding the Fourth Proportional to 243,402.40, 365,038.80 and 74,922.40

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Solution

The fourth proportional to 243,402.40, 365,038.80 and 74,922.40 is: 112,363.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,402.40 : 365,038.80 = 74,922.40 : x
  2. Step 2: Convert to fraction form
    243,402.40/365,038.80 = 74,922.40/x
  3. Step 3: Cross multiply
    243,402.40x = 365,038.80 × 74,922.40
  4. Step 4: Simplify right side
    243,402.40x = 27,349,582,989.12
  5. Step 5: Solve for x
    x = 27,349,582,989.12/243,402.40
  6. Step 6: Final answer
    x = 112,363.65

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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.