Home / 428,723,141.16-643,123,073.16-166,401,542.28

Finding the Fourth Proportional to 428,723,141.16, 643,123,073.16 and 166,401,542.28

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Solution

The fourth proportional to 428,723,141.16, 643,123,073.16 and 166,401,542.28 is: 249,617,202.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,723,141.16 : 643,123,073.16 = 166,401,542.28 : x
  2. Step 2: Convert to fraction form
    428,723,141.16/643,123,073.16 = 166,401,542.28/x
  3. Step 3: Cross multiply
    428,723,141.16x = 643,123,073.16 × 166,401,542.28
  4. Step 4: Simplify right side
    428,723,141.16x = 107,016,671,249,677,264
  5. Step 5: Solve for x
    x = 107,016,671,249,677,264/428,723,141.16
  6. Step 6: Final answer
    x = 249,617,202.75

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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.