Home / 318,837,615.20-478,256,422.80-103,426,863.20

Finding the Fourth Proportional to 318,837,615.20, 478,256,422.80 and 103,426,863.20

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Solution

The fourth proportional to 318,837,615.20, 478,256,422.80 and 103,426,863.20 is: 155,140,294.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,837,615.20 : 478,256,422.80 = 103,426,863.20 : x
  2. Step 2: Convert to fraction form
    318,837,615.20/478,256,422.80 = 103,426,863.20/x
  3. Step 3: Cross multiply
    318,837,615.20x = 478,256,422.80 × 103,426,863.20
  4. Step 4: Simplify right side
    318,837,615.20x = 49,464,561,615,456,960
  5. Step 5: Solve for x
    x = 49,464,561,615,456,960/318,837,615.20
  6. Step 6: Final answer
    x = 155,140,294.80

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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.