Home / 427,792.79-642,319.98-238,622.76

Finding the Fourth Proportional to 427,792.79, 642,319.98 and 238,622.76

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Solution

The fourth proportional to 427,792.79, 642,319.98 and 238,622.76 is: 358,286.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,792.79 : 642,319.98 = 238,622.76 : x
  2. Step 2: Convert to fraction form
    427,792.79/642,319.98 = 238,622.76/x
  3. Step 3: Cross multiply
    427,792.79x = 642,319.98 × 238,622.76
  4. Step 4: Simplify right side
    427,792.79x = 153,272,166,430.75
  5. Step 5: Solve for x
    x = 153,272,166,430.75/427,792.79
  6. Step 6: Final answer
    x = 358,286.00

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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.