Home / 210,938.04-316,457.82-86,279.40

Finding the Fourth Proportional to 210,938.04, 316,457.82 and 86,279.40

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Solution

The fourth proportional to 210,938.04, 316,457.82 and 86,279.40 is: 129,439.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,938.04 : 316,457.82 = 86,279.40 : x
  2. Step 2: Convert to fraction form
    210,938.04/316,457.82 = 86,279.40/x
  3. Step 3: Cross multiply
    210,938.04x = 316,457.82 × 86,279.40
  4. Step 4: Simplify right side
    210,938.04x = 27,303,790,834.91
  5. Step 5: Solve for x
    x = 27,303,790,834.91/210,938.04
  6. Step 6: Final answer
    x = 129,439.86

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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.