Home / 310,291,856.60-465,400,460.10-128,520,080.60

Finding the Fourth Proportional to 310,291,856.60, 465,400,460.10 and 128,520,080.60

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Solution

The fourth proportional to 310,291,856.60, 465,400,460.10 and 128,520,080.60 is: 192,764,661.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,291,856.60 : 465,400,460.10 = 128,520,080.60 : x
  2. Step 2: Convert to fraction form
    310,291,856.60/465,400,460.10 = 128,520,080.60/x
  3. Step 3: Cross multiply
    310,291,856.60x = 465,400,460.10 × 128,520,080.60
  4. Step 4: Simplify right side
    310,291,856.60x = 59,813,304,643,329,088
  5. Step 5: Solve for x
    x = 59,813,304,643,329,088/310,291,856.60
  6. Step 6: Final answer
    x = 192,764,661.31

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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.