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Finding the Fourth Proportional to 255,521, 352,430.08 and 187,515

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Solution

The fourth proportional to 255,521, 352,430.08 and 187,515 is: 258,632.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,521 : 352,430.08 = 187,515 : x
  2. Step 2: Convert to fraction form
    255,521/352,430.08 = 187,515/x
  3. Step 3: Cross multiply
    255,521x = 352,430.08 × 187,515
  4. Step 4: Simplify right side
    255,521x = 66,085,926,451.20
  5. Step 5: Solve for x
    x = 66,085,926,451.20/255,521
  6. Step 6: Final answer
    x = 258,632.08

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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.