Home / 407,128.60-561,840.84-225,852.40

Finding the Fourth Proportional to 407,128.60, 561,840.84 and 225,852.40

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Solution

The fourth proportional to 407,128.60, 561,840.84 and 225,852.40 is: 311,678.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,128.60 : 561,840.84 = 225,852.40 : x
  2. Step 2: Convert to fraction form
    407,128.60/561,840.84 = 225,852.40/x
  3. Step 3: Cross multiply
    407,128.60x = 561,840.84 × 225,852.40
  4. Step 4: Simplify right side
    407,128.60x = 126,893,102,132.02
  5. Step 5: Solve for x
    x = 126,893,102,132.02/407,128.60
  6. Step 6: Final answer
    x = 311,678.18

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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.