Home / 387,360.45-534,373.02-258,358.50

Finding the Fourth Proportional to 387,360.45, 534,373.02 and 258,358.50

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Solution

The fourth proportional to 387,360.45, 534,373.02 and 258,358.50 is: 356,411.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,360.45 : 534,373.02 = 258,358.50 : x
  2. Step 2: Convert to fraction form
    387,360.45/534,373.02 = 258,358.50/x
  3. Step 3: Cross multiply
    387,360.45x = 534,373.02 × 258,358.50
  4. Step 4: Simplify right side
    387,360.45x = 138,059,811,887.67
  5. Step 5: Solve for x
    x = 138,059,811,887.67/387,360.45
  6. Step 6: Final answer
    x = 356,411.74

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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.