Home / 319,198,390.92-440,493,580.51-172,520,674.92

Finding the Fourth Proportional to 319,198,390.92, 440,493,580.51 and 172,520,674.92

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Solution

The fourth proportional to 319,198,390.92, 440,493,580.51 and 172,520,674.92 is: 238,078,423.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,198,390.92 : 440,493,580.51 = 172,520,674.92 : x
  2. Step 2: Convert to fraction form
    319,198,390.92/440,493,580.51 = 172,520,674.92/x
  3. Step 3: Cross multiply
    319,198,390.92x = 440,493,580.51 × 172,520,674.92
  4. Step 4: Simplify right side
    319,198,390.92x = 75,994,249,807,081,248
  5. Step 5: Solve for x
    x = 75,994,249,807,081,248/319,198,390.92
  6. Step 6: Final answer
    x = 238,078,423.85

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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.