Home / 261,355.02-391,728.78-118,986.18

Finding the Fourth Proportional to 261,355.02, 391,728.78 and 118,986.18

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Solution

The fourth proportional to 261,355.02, 391,728.78 and 118,986.18 is: 178,340.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,355.02 : 391,728.78 = 118,986.18 : x
  2. Step 2: Convert to fraction form
    261,355.02/391,728.78 = 118,986.18/x
  3. Step 3: Cross multiply
    261,355.02x = 391,728.78 × 118,986.18
  4. Step 4: Simplify right side
    261,355.02x = 46,610,311,128.26
  5. Step 5: Solve for x
    x = 46,610,311,128.26/261,355.02
  6. Step 6: Final answer
    x = 178,340.98

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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.