Home / 255,970.13-383,953.82-66,430.35

Finding the Fourth Proportional to 255,970.13, 383,953.82 and 66,430.35

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Solution

The fourth proportional to 255,970.13, 383,953.82 and 66,430.35 is: 99,645.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,970.13 : 383,953.82 = 66,430.35 : x
  2. Step 2: Convert to fraction form
    255,970.13/383,953.82 = 66,430.35/x
  3. Step 3: Cross multiply
    255,970.13x = 383,953.82 × 66,430.35
  4. Step 4: Simplify right side
    255,970.13x = 25,506,187,767.83
  5. Step 5: Solve for x
    x = 25,506,187,767.83/255,970.13
  6. Step 6: Final answer
    x = 99,645.17

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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.