Home / 344,095,145.60-516,142,718.40-128,639,811.20

Finding the Fourth Proportional to 344,095,145.60, 516,142,718.40 and 128,639,811.20

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Solution

The fourth proportional to 344,095,145.60, 516,142,718.40 and 128,639,811.20 is: 192,959,716.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    344,095,145.60 : 516,142,718.40 = 128,639,811.20 : x
  2. Step 2: Convert to fraction form
    344,095,145.60/516,142,718.40 = 128,639,811.20/x
  3. Step 3: Cross multiply
    344,095,145.60x = 516,142,718.40 × 128,639,811.20
  4. Step 4: Simplify right side
    344,095,145.60x = 66,396,501,847,230,768
  5. Step 5: Solve for x
    x = 66,396,501,847,230,768/344,095,145.60
  6. Step 6: Final answer
    x = 192,959,716.80

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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.