Home / 258,326.08-387,254.40-191,685.76

Finding the Fourth Proportional to 258,326.08, 387,254.40 and 191,685.76

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Solution

The fourth proportional to 258,326.08, 387,254.40 and 191,685.76 is: 287,354.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,326.08 : 387,254.40 = 191,685.76 : x
  2. Step 2: Convert to fraction form
    258,326.08/387,254.40 = 191,685.76/x
  3. Step 3: Cross multiply
    258,326.08x = 387,254.40 × 191,685.76
  4. Step 4: Simplify right side
    258,326.08x = 74,231,153,977.34
  5. Step 5: Solve for x
    x = 74,231,153,977.34/258,326.08
  6. Step 6: Final answer
    x = 287,354.47

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1.5x scale

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.