Home / 429,239,266.80-643,906,139.40-156,669,082.80

Finding the Fourth Proportional to 429,239,266.80, 643,906,139.40 and 156,669,082.80

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Solution

The fourth proportional to 429,239,266.80, 643,906,139.40 and 156,669,082.80 is: 235,020,866.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,239,266.80 : 643,906,139.40 = 156,669,082.80 : x
  2. Step 2: Convert to fraction form
    429,239,266.80/643,906,139.40 = 156,669,082.80/x
  3. Step 3: Cross multiply
    429,239,266.80x = 643,906,139.40 × 156,669,082.80
  4. Step 4: Simplify right side
    429,239,266.80x = 100,880,184,269,086,944
  5. Step 5: Solve for x
    x = 100,880,184,269,086,944/429,239,266.80
  6. Step 6: Final answer
    x = 235,020,866.15

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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.