Home / 212,423.13-318,558.77-70,242.16

Finding the Fourth Proportional to 212,423.13, 318,558.77 and 70,242.16

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Solution

The fourth proportional to 212,423.13, 318,558.77 and 70,242.16 is: 105,338.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,423.13 : 318,558.77 = 70,242.16 : x
  2. Step 2: Convert to fraction form
    212,423.13/318,558.77 = 70,242.16/x
  3. Step 3: Cross multiply
    212,423.13x = 318,558.77 × 70,242.16
  4. Step 4: Simplify right side
    212,423.13x = 22,376,255,470.95
  5. Step 5: Solve for x
    x = 22,376,255,470.95/212,423.13
  6. Step 6: Final answer
    x = 105,338.13

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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.