Home / 282,130,005.12-389,304,151.20-156,665,142.60

Finding the Fourth Proportional to 282,130,005.12, 389,304,151.20 and 156,665,142.60

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Solution

The fourth proportional to 282,130,005.12, 389,304,151.20 and 156,665,142.60 is: 216,178,319.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,130,005.12 : 389,304,151.20 = 156,665,142.60 : x
  2. Step 2: Convert to fraction form
    282,130,005.12/389,304,151.20 = 156,665,142.60/x
  3. Step 3: Cross multiply
    282,130,005.12x = 389,304,151.20 × 156,665,142.60
  4. Step 4: Simplify right side
    282,130,005.12x = 60,990,390,362,519,960
  5. Step 5: Solve for x
    x = 60,990,390,362,519,960/282,130,005.12
  6. Step 6: Final answer
    x = 216,178,319.41

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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.