Home / 407,123.17-561,838.98-225,829.21

Finding the Fourth Proportional to 407,123.17, 561,838.98 and 225,829.21

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Solution

The fourth proportional to 407,123.17, 561,838.98 and 225,829.21 is: 311,649.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,123.17 : 561,838.98 = 225,829.21 : x
  2. Step 2: Convert to fraction form
    407,123.17/561,838.98 = 225,829.21/x
  3. Step 3: Cross multiply
    407,123.17x = 561,838.98 × 225,829.21
  4. Step 4: Simplify right side
    407,123.17x = 126,879,653,000.61
  5. Step 5: Solve for x
    x = 126,879,653,000.61/407,123.17
  6. Step 6: Final answer
    x = 311,649.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.