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Finding the Fourth Proportional to 319,482.40, 440,880.24 and 176,256.16

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Solution

The fourth proportional to 319,482.40, 440,880.24 and 176,256.16 is: 243,230.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,482.40 : 440,880.24 = 176,256.16 : x
  2. Step 2: Convert to fraction form
    319,482.40/440,880.24 = 176,256.16/x
  3. Step 3: Cross multiply
    319,482.40x = 440,880.24 × 176,256.16
  4. Step 4: Simplify right side
    319,482.40x = 77,707,858,122.28
  5. Step 5: Solve for x
    x = 77,707,858,122.28/319,482.40
  6. Step 6: Final answer
    x = 243,230.48

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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.