Home / 282,753,905.22-390,203,980.18-155,609,222.38

Finding the Fourth Proportional to 282,753,905.22, 390,203,980.18 and 155,609,222.38

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Solution

The fourth proportional to 282,753,905.22, 390,203,980.18 and 155,609,222.38 is: 214,742,703.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,753,905.22 : 390,203,980.18 = 155,609,222.38 : x
  2. Step 2: Convert to fraction form
    282,753,905.22/390,203,980.18 = 155,609,222.38/x
  3. Step 3: Cross multiply
    282,753,905.22x = 390,203,980.18 × 155,609,222.38
  4. Step 4: Simplify right side
    282,753,905.22x = 60,719,337,923,439,712
  5. Step 5: Solve for x
    x = 60,719,337,923,439,712/282,753,905.22
  6. Step 6: Final answer
    x = 214,742,703.12

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1.5x scale

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.