Home / 429,985.34-645,055.56-177,127.80

Finding the Fourth Proportional to 429,985.34, 645,055.56 and 177,127.80

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Solution

The fourth proportional to 429,985.34, 645,055.56 and 177,127.80 is: 265,723.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,985.34 : 645,055.56 = 177,127.80 : x
  2. Step 2: Convert to fraction form
    429,985.34/645,055.56 = 177,127.80/x
  3. Step 3: Cross multiply
    429,985.34x = 645,055.56 × 177,127.80
  4. Step 4: Simplify right side
    429,985.34x = 114,257,272,220.57
  5. Step 5: Solve for x
    x = 114,257,272,220.57/429,985.34
  6. Step 6: Final answer
    x = 265,723.65

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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.