Home / 312,872,490.32-431,743,923.24-173,643,346.40

Finding the Fourth Proportional to 312,872,490.32, 431,743,923.24 and 173,643,346.40

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Solution

The fourth proportional to 312,872,490.32, 431,743,923.24 and 173,643,346.40 is: 239,616,655.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,872,490.32 : 431,743,923.24 = 173,643,346.40 : x
  2. Step 2: Convert to fraction form
    312,872,490.32/431,743,923.24 = 173,643,346.40/x
  3. Step 3: Cross multiply
    312,872,490.32x = 431,743,923.24 × 173,643,346.40
  4. Step 4: Simplify right side
    312,872,490.32x = 74,969,459,619,258,336
  5. Step 5: Solve for x
    x = 74,969,459,619,258,336/312,872,490.32
  6. Step 6: Final answer
    x = 239,616,655.15

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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.