Home / 280,457,193.52-387,050,954.76-155,006,690.64

Finding the Fourth Proportional to 280,457,193.52, 387,050,954.76 and 155,006,690.64

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Solution

The fourth proportional to 280,457,193.52, 387,050,954.76 and 155,006,690.64 is: 213,920,302.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,457,193.52 : 387,050,954.76 = 155,006,690.64 : x
  2. Step 2: Convert to fraction form
    280,457,193.52/387,050,954.76 = 155,006,690.64/x
  3. Step 3: Cross multiply
    280,457,193.52x = 387,050,954.76 × 155,006,690.64
  4. Step 4: Simplify right side
    280,457,193.52x = 59,995,487,606,399,952
  5. Step 5: Solve for x
    x = 59,995,487,606,399,952/280,457,193.52
  6. Step 6: Final answer
    x = 213,920,302.25

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1.5x scale

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.