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Finding the Fourth Proportional to 318,905, 440,088.90 and 175,664.60

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Solution

The fourth proportional to 318,905, 440,088.90 and 175,664.60 is: 242,417.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,905 : 440,088.90 = 175,664.60 : x
  2. Step 2: Convert to fraction form
    318,905/440,088.90 = 175,664.60/x
  3. Step 3: Cross multiply
    318,905x = 440,088.90 × 175,664.60
  4. Step 4: Simplify right side
    318,905x = 77,308,040,582.94
  5. Step 5: Solve for x
    x = 77,308,040,582.94/318,905
  6. Step 6: Final answer
    x = 242,417.15

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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.