Home / 292,221.17-438,315.34-78,985.93

Finding the Fourth Proportional to 292,221.17, 438,315.34 and 78,985.93

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Solution

The fourth proportional to 292,221.17, 438,315.34 and 78,985.93 is: 118,474.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,221.17 : 438,315.34 = 78,985.93 : x
  2. Step 2: Convert to fraction form
    292,221.17/438,315.34 = 78,985.93/x
  3. Step 3: Cross multiply
    292,221.17x = 438,315.34 × 78,985.93
  4. Step 4: Simplify right side
    292,221.17x = 34,620,744,763.17
  5. Step 5: Solve for x
    x = 34,620,744,763.17/292,221.17
  6. Step 6: Final answer
    x = 118,474.46

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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.