Home / 310,291,856.10-465,400,459.35-128,520,080.10

Finding the Fourth Proportional to 310,291,856.10, 465,400,459.35 and 128,520,080.10

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Solution

The fourth proportional to 310,291,856.10, 465,400,459.35 and 128,520,080.10 is: 192,764,660.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,291,856.10 : 465,400,459.35 = 128,520,080.10 : x
  2. Step 2: Convert to fraction form
    310,291,856.10/465,400,459.35 = 128,520,080.10/x
  3. Step 3: Cross multiply
    310,291,856.10x = 465,400,459.35 × 128,520,080.10
  4. Step 4: Simplify right side
    310,291,856.10x = 59,813,304,314,238,792
  5. Step 5: Solve for x
    x = 59,813,304,314,238,792/310,291,856.10
  6. Step 6: Final answer
    x = 192,764,660.56

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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.