Home / 211,363,419.80-317,045,129.70-142,488,666.20

Finding the Fourth Proportional to 211,363,419.80, 317,045,129.70 and 142,488,666.20

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Solution

The fourth proportional to 211,363,419.80, 317,045,129.70 and 142,488,666.20 is: 213,732,999.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,363,419.80 : 317,045,129.70 = 142,488,666.20 : x
  2. Step 2: Convert to fraction form
    211,363,419.80/317,045,129.70 = 142,488,666.20/x
  3. Step 3: Cross multiply
    211,363,419.80x = 317,045,129.70 × 142,488,666.20
  4. Step 4: Simplify right side
    211,363,419.80x = 45,175,337,656,159,000
  5. Step 5: Solve for x
    x = 45,175,337,656,159,000/211,363,419.80
  6. Step 6: Final answer
    x = 213,732,999.30

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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.