Home / 287,964,091.24-397,390,439.74-155,805,087.80

Finding the Fourth Proportional to 287,964,091.24, 397,390,439.74 and 155,805,087.80

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Solution

The fourth proportional to 287,964,091.24, 397,390,439.74 and 155,805,087.80 is: 215,011,017.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,964,091.24 : 397,390,439.74 = 155,805,087.80 : x
  2. Step 2: Convert to fraction form
    287,964,091.24/397,390,439.74 = 155,805,087.80/x
  3. Step 3: Cross multiply
    287,964,091.24x = 397,390,439.74 × 155,805,087.80
  4. Step 4: Simplify right side
    287,964,091.24x = 61,915,452,354,571,312
  5. Step 5: Solve for x
    x = 61,915,452,354,571,312/287,964,091.24
  6. Step 6: Final answer
    x = 215,011,017.83

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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.