Home / 258,731,695.20-388,097,542.80-105,487,730.40

Finding the Fourth Proportional to 258,731,695.20, 388,097,542.80 and 105,487,730.40

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Solution

The fourth proportional to 258,731,695.20, 388,097,542.80 and 105,487,730.40 is: 158,231,595.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,731,695.20 : 388,097,542.80 = 105,487,730.40 : x
  2. Step 2: Convert to fraction form
    258,731,695.20/388,097,542.80 = 105,487,730.40/x
  3. Step 3: Cross multiply
    258,731,695.20x = 388,097,542.80 × 105,487,730.40
  4. Step 4: Simplify right side
    258,731,695.20x = 40,939,528,963,788,864
  5. Step 5: Solve for x
    x = 40,939,528,963,788,864/258,731,695.20
  6. Step 6: Final answer
    x = 158,231,595.60

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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.