Home / 287,668,900.29-397,091,038.92-188,556,034.89

Finding the Fourth Proportional to 287,668,900.29, 397,091,038.92 and 188,556,034.89

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Solution

The fourth proportional to 287,668,900.29, 397,091,038.92 and 188,556,034.89 is: 260,278,089.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,668,900.29 : 397,091,038.92 = 188,556,034.89 : x
  2. Step 2: Convert to fraction form
    287,668,900.29/397,091,038.92 = 188,556,034.89/x
  3. Step 3: Cross multiply
    287,668,900.29x = 397,091,038.92 × 188,556,034.89
  4. Step 4: Simplify right side
    287,668,900.29x = 74,873,911,789,105,872
  5. Step 5: Solve for x
    x = 74,873,911,789,105,872/287,668,900.29
  6. Step 6: Final answer
    x = 260,278,089.55

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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.