Home / 287,148,011.20-430,722,016.80-105,371,569.60

Finding the Fourth Proportional to 287,148,011.20, 430,722,016.80 and 105,371,569.60

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Solution

The fourth proportional to 287,148,011.20, 430,722,016.80 and 105,371,569.60 is: 158,057,354.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,148,011.20 : 430,722,016.80 = 105,371,569.60 : x
  2. Step 2: Convert to fraction form
    287,148,011.20/430,722,016.80 = 105,371,569.60/x
  3. Step 3: Cross multiply
    287,148,011.20x = 430,722,016.80 × 105,371,569.60
  4. Step 4: Simplify right side
    287,148,011.20x = 45,385,854,971,493,568
  5. Step 5: Solve for x
    x = 45,385,854,971,493,568/287,148,011.20
  6. Step 6: Final answer
    x = 158,057,354.40

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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.