Home / 287,728,443.70-431,592,665.55-105,952,002.10

Finding the Fourth Proportional to 287,728,443.70, 431,592,665.55 and 105,952,002.10

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Solution

The fourth proportional to 287,728,443.70, 431,592,665.55 and 105,952,002.10 is: 158,928,003.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,728,443.70 : 431,592,665.55 = 105,952,002.10 : x
  2. Step 2: Convert to fraction form
    287,728,443.70/431,592,665.55 = 105,952,002.10/x
  3. Step 3: Cross multiply
    287,728,443.70x = 431,592,665.55 × 105,952,002.10
  4. Step 4: Simplify right side
    287,728,443.70x = 45,728,107,006,698,200
  5. Step 5: Solve for x
    x = 45,728,107,006,698,200/287,728,443.70
  6. Step 6: Final answer
    x = 158,928,003.15

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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.