Home / 247,341.28-371,039.16-78,822.40

Finding the Fourth Proportional to 247,341.28, 371,039.16 and 78,822.40

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Solution

The fourth proportional to 247,341.28, 371,039.16 and 78,822.40 is: 118,242.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,341.28 : 371,039.16 = 78,822.40 : x
  2. Step 2: Convert to fraction form
    247,341.28/371,039.16 = 78,822.40/x
  3. Step 3: Cross multiply
    247,341.28x = 371,039.16 × 78,822.40
  4. Step 4: Simplify right side
    247,341.28x = 29,246,197,085.18
  5. Step 5: Solve for x
    x = 29,246,197,085.18/247,341.28
  6. Step 6: Final answer
    x = 118,242.28

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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.