Home / 220,910,172.56-304,788,482.88-128,072,154.32

Finding the Fourth Proportional to 220,910,172.56, 304,788,482.88 and 128,072,154.32

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Solution

The fourth proportional to 220,910,172.56, 304,788,482.88 and 128,072,154.32 is: 176,700,407.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,910,172.56 : 304,788,482.88 = 128,072,154.32 : x
  2. Step 2: Convert to fraction form
    220,910,172.56/304,788,482.88 = 128,072,154.32/x
  3. Step 3: Cross multiply
    220,910,172.56x = 304,788,482.88 × 128,072,154.32
  4. Step 4: Simplify right side
    220,910,172.56x = 39,034,917,614,366,032
  5. Step 5: Solve for x
    x = 39,034,917,614,366,032/220,910,172.56
  6. Step 6: Final answer
    x = 176,700,407.96

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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.