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Finding the Fourth Proportional to 561,087.60, 841,631.40 and 372,130.80

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Solution

The fourth proportional to 561,087.60, 841,631.40 and 372,130.80 is: 558,196.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,087.60 : 841,631.40 = 372,130.80 : x
  2. Step 2: Convert to fraction form
    561,087.60/841,631.40 = 372,130.80/x
  3. Step 3: Cross multiply
    561,087.60x = 841,631.40 × 372,130.80
  4. Step 4: Simplify right side
    561,087.60x = 313,196,966,187.12
  5. Step 5: Solve for x
    x = 313,196,966,187.12/561,087.60
  6. Step 6: Final answer
    x = 558,196.20

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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.