Home / 318,018.40-477,024.24-81,359.20

Finding the Fourth Proportional to 318,018.40, 477,024.24 and 81,359.20

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Solution

The fourth proportional to 318,018.40, 477,024.24 and 81,359.20 is: 122,037.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,018.40 : 477,024.24 = 81,359.20 : x
  2. Step 2: Convert to fraction form
    318,018.40/477,024.24 = 81,359.20/x
  3. Step 3: Cross multiply
    318,018.40x = 477,024.24 × 81,359.20
  4. Step 4: Simplify right side
    318,018.40x = 38,810,310,547.01
  5. Step 5: Solve for x
    x = 38,810,310,547.01/318,018.40
  6. Step 6: Final answer
    x = 122,037.94

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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.