Home / 310,814,141.28-428,918,068.08-171,581,321.76

Finding the Fourth Proportional to 310,814,141.28, 428,918,068.08 and 171,581,321.76

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Solution

The fourth proportional to 310,814,141.28, 428,918,068.08 and 171,581,321.76 is: 236,779,217.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,814,141.28 : 428,918,068.08 = 171,581,321.76 : x
  2. Step 2: Convert to fraction form
    310,814,141.28/428,918,068.08 = 171,581,321.76/x
  3. Step 3: Cross multiply
    310,814,141.28x = 428,918,068.08 × 171,581,321.76
  4. Step 4: Simplify right side
    310,814,141.28x = 73,594,329,047,912,064
  5. Step 5: Solve for x
    x = 73,594,329,047,912,064/310,814,141.28
  6. Step 6: Final answer
    x = 236,779,217.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.