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Finding the Fourth Proportional to 235,670.10, 325,225.44 and 128,240.16

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Solution

The fourth proportional to 235,670.10, 325,225.44 and 128,240.16 is: 176,971.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,670.10 : 325,225.44 = 128,240.16 : x
  2. Step 2: Convert to fraction form
    235,670.10/325,225.44 = 128,240.16/x
  3. Step 3: Cross multiply
    235,670.10x = 325,225.44 × 128,240.16
  4. Step 4: Simplify right side
    235,670.10x = 41,706,962,461.67
  5. Step 5: Solve for x
    x = 41,706,962,461.67/235,670.10
  6. Step 6: Final answer
    x = 176,971.80

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1.5x scale

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.