Home / 385,830.60-577,968.30-219,424.20

Finding the Fourth Proportional to 385,830.60, 577,968.30 and 219,424.20

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Solution

The fourth proportional to 385,830.60, 577,968.30 and 219,424.20 is: 328,694.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,830.60 : 577,968.30 = 219,424.20 : x
  2. Step 2: Convert to fraction form
    385,830.60/577,968.30 = 219,424.20/x
  3. Step 3: Cross multiply
    385,830.60x = 577,968.30 × 219,424.20
  4. Step 4: Simplify right side
    385,830.60x = 126,820,231,852.86
  5. Step 5: Solve for x
    x = 126,820,231,852.86/385,830.60
  6. Step 6: Final answer
    x = 328,694.07

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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.