Home / 281,418,893.64-388,358,110.71-155,979,179.40

Finding the Fourth Proportional to 281,418,893.64, 388,358,110.71 and 155,979,179.40

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Solution

The fourth proportional to 281,418,893.64, 388,358,110.71 and 155,979,179.40 is: 215,251,288.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,418,893.64 : 388,358,110.71 = 155,979,179.40 : x
  2. Step 2: Convert to fraction form
    281,418,893.64/388,358,110.71 = 155,979,179.40/x
  3. Step 3: Cross multiply
    281,418,893.64x = 388,358,110.71 × 155,979,179.40
  4. Step 4: Simplify right side
    281,418,893.64x = 60,575,779,421,880,152
  5. Step 5: Solve for x
    x = 60,575,779,421,880,152/281,418,893.64
  6. Step 6: Final answer
    x = 215,251,288.35

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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.