Home / 287,658,005.20-431,487,007.80-195,825,000.40

Finding the Fourth Proportional to 287,658,005.20, 431,487,007.80 and 195,825,000.40

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Solution

The fourth proportional to 287,658,005.20, 431,487,007.80 and 195,825,000.40 is: 293,737,500.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,658,005.20 : 431,487,007.80 = 195,825,000.40 : x
  2. Step 2: Convert to fraction form
    287,658,005.20/431,487,007.80 = 195,825,000.40/x
  3. Step 3: Cross multiply
    287,658,005.20x = 431,487,007.80 × 195,825,000.40
  4. Step 4: Simplify right side
    287,658,005.20x = 84,495,943,475,029,808
  5. Step 5: Solve for x
    x = 84,495,943,475,029,808/287,658,005.20
  6. Step 6: Final answer
    x = 293,737,500.60

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1.5x scale

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.