Home / 222,602,657.32-307,145,666.10-128,515,173.88

Finding the Fourth Proportional to 222,602,657.32, 307,145,666.10 and 128,515,173.88

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Solution

The fourth proportional to 222,602,657.32, 307,145,666.10 and 128,515,173.88 is: 177,324,382.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,602,657.32 : 307,145,666.10 = 128,515,173.88 : x
  2. Step 2: Convert to fraction form
    222,602,657.32/307,145,666.10 = 128,515,173.88/x
  3. Step 3: Cross multiply
    222,602,657.32x = 307,145,666.10 × 128,515,173.88
  4. Step 4: Simplify right side
    222,602,657.32x = 39,472,878,685,329,920
  5. Step 5: Solve for x
    x = 39,472,878,685,329,920/222,602,657.32
  6. Step 6: Final answer
    x = 177,324,382.20

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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.