Home / 278,787,683.31-384,727,200.29-153,349,422.87

Finding the Fourth Proportional to 278,787,683.31, 384,727,200.29 and 153,349,422.87

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Solution

The fourth proportional to 278,787,683.31, 384,727,200.29 and 153,349,422.87 is: 211,622,312.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,787,683.31 : 384,727,200.29 = 153,349,422.87 : x
  2. Step 2: Convert to fraction form
    278,787,683.31/384,727,200.29 = 153,349,422.87/x
  3. Step 3: Cross multiply
    278,787,683.31x = 384,727,200.29 × 153,349,422.87
  4. Step 4: Simplify right side
    278,787,683.31x = 58,997,694,126,095,656
  5. Step 5: Solve for x
    x = 58,997,694,126,095,656/278,787,683.31
  6. Step 6: Final answer
    x = 211,622,312.10

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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.