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Finding the Fourth Proportional to 319,310.32, 440,638.64 and 176,070.32

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Solution

The fourth proportional to 319,310.32, 440,638.64 and 176,070.32 is: 242,971.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,310.32 : 440,638.64 = 176,070.32 : x
  2. Step 2: Convert to fraction form
    319,310.32/440,638.64 = 176,070.32/x
  3. Step 3: Cross multiply
    319,310.32x = 440,638.64 × 176,070.32
  4. Step 4: Simplify right side
    319,310.32x = 77,583,386,349.16
  5. Step 5: Solve for x
    x = 77,583,386,349.16/319,310.32
  6. Step 6: Final answer
    x = 242,971.75

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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.