Home / 258,315.90-386,782.65-164,312.70

Finding the Fourth Proportional to 258,315.90, 386,782.65 and 164,312.70

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Solution

The fourth proportional to 258,315.90, 386,782.65 and 164,312.70 is: 246,029.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,315.90 : 386,782.65 = 164,312.70 : x
  2. Step 2: Convert to fraction form
    258,315.90/386,782.65 = 164,312.70/x
  3. Step 3: Cross multiply
    258,315.90x = 386,782.65 × 164,312.70
  4. Step 4: Simplify right side
    258,315.90x = 63,553,301,534.66
  5. Step 5: Solve for x
    x = 63,553,301,534.66/258,315.90
  6. Step 6: Final answer
    x = 246,029.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.