Home / 279,077,655.36-385,127,169.60-155,347,561.92

Finding the Fourth Proportional to 279,077,655.36, 385,127,169.60 and 155,347,561.92

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Solution

The fourth proportional to 279,077,655.36, 385,127,169.60 and 155,347,561.92 is: 214,379,638.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,077,655.36 : 385,127,169.60 = 155,347,561.92 : x
  2. Step 2: Convert to fraction form
    279,077,655.36/385,127,169.60 = 155,347,561.92/x
  3. Step 3: Cross multiply
    279,077,655.36x = 385,127,169.60 × 155,347,561.92
  4. Step 4: Simplify right side
    279,077,655.36x = 59,828,566,826,510,344
  5. Step 5: Solve for x
    x = 59,828,566,826,510,344/279,077,655.36
  6. Step 6: Final answer
    x = 214,379,638.35

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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.