Home / 429,113.60-643,670.40-240,156.80

Finding the Fourth Proportional to 429,113.60, 643,670.40 and 240,156.80

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Solution

The fourth proportional to 429,113.60, 643,670.40 and 240,156.80 is: 360,235.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,113.60 : 643,670.40 = 240,156.80 : x
  2. Step 2: Convert to fraction form
    429,113.60/643,670.40 = 240,156.80/x
  3. Step 3: Cross multiply
    429,113.60x = 643,670.40 × 240,156.80
  4. Step 4: Simplify right side
    429,113.60x = 154,581,823,518.72
  5. Step 5: Solve for x
    x = 154,581,823,518.72/429,113.60
  6. Step 6: Final answer
    x = 360,235.20

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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.