Home / 318,047.04-477,070.16-81,389.79

Finding the Fourth Proportional to 318,047.04, 477,070.16 and 81,389.79

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Solution

The fourth proportional to 318,047.04, 477,070.16 and 81,389.79 is: 122,084.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,047.04 : 477,070.16 = 81,389.79 : x
  2. Step 2: Convert to fraction form
    318,047.04/477,070.16 = 81,389.79/x
  3. Step 3: Cross multiply
    318,047.04x = 477,070.16 × 81,389.79
  4. Step 4: Simplify right side
    318,047.04x = 38,828,639,730.72
  5. Step 5: Solve for x
    x = 38,828,639,730.72/318,047.04
  6. Step 6: Final answer
    x = 122,084.58

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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.