Home / 279,607,284.02-419,343,641.76-85,520,374.94

Finding the Fourth Proportional to 279,607,284.02, 419,343,641.76 and 85,520,374.94

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Solution

The fourth proportional to 279,607,284.02, 419,343,641.76 and 85,520,374.94 is: 128,259,982.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,607,284.02 : 419,343,641.76 = 85,520,374.94 : x
  2. Step 2: Convert to fraction form
    279,607,284.02/419,343,641.76 = 85,520,374.94/x
  3. Step 3: Cross multiply
    279,607,284.02x = 419,343,641.76 × 85,520,374.94
  4. Step 4: Simplify right side
    279,607,284.02x = 35,862,425,472,020,240
  5. Step 5: Solve for x
    x = 35,862,425,472,020,240/279,607,284.02
  6. Step 6: Final answer
    x = 128,259,982.92

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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.