Home / 427,808,665.10-641,756,500.06-147,653,118.20

Finding the Fourth Proportional to 427,808,665.10, 641,756,500.06 and 147,653,118.20

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Solution

The fourth proportional to 427,808,665.10, 641,756,500.06 and 147,653,118.20 is: 221,494,691.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,808,665.10 : 641,756,500.06 = 147,653,118.20 : x
  2. Step 2: Convert to fraction form
    427,808,665.10/641,756,500.06 = 147,653,118.20/x
  3. Step 3: Cross multiply
    427,808,665.10x = 641,756,500.06 × 147,653,118.20
  4. Step 4: Simplify right side
    427,808,665.10x = 94,757,348,358,977,472
  5. Step 5: Solve for x
    x = 94,757,348,358,977,472/427,808,665.10
  6. Step 6: Final answer
    x = 221,494,691.64

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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.