Home / 429,027.60-643,399.65-144,641.46

Finding the Fourth Proportional to 429,027.60, 643,399.65 and 144,641.46

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Solution

The fourth proportional to 429,027.60, 643,399.65 and 144,641.46 is: 216,914.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,027.60 : 643,399.65 = 144,641.46 : x
  2. Step 2: Convert to fraction form
    429,027.60/643,399.65 = 144,641.46/x
  3. Step 3: Cross multiply
    429,027.60x = 643,399.65 × 144,641.46
  4. Step 4: Simplify right side
    429,027.60x = 93,062,264,739.49
  5. Step 5: Solve for x
    x = 93,062,264,739.49/429,027.60
  6. Step 6: Final answer
    x = 216,914.40

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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.