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Finding the Fourth Proportional to 346,685.40, 520,028.10 and 283,699.80

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Solution

The fourth proportional to 346,685.40, 520,028.10 and 283,699.80 is: 425,549.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,685.40 : 520,028.10 = 283,699.80 : x
  2. Step 2: Convert to fraction form
    346,685.40/520,028.10 = 283,699.80/x
  3. Step 3: Cross multiply
    346,685.40x = 520,028.10 × 283,699.80
  4. Step 4: Simplify right side
    346,685.40x = 147,531,867,964.38
  5. Step 5: Solve for x
    x = 147,531,867,964.38/346,685.40
  6. Step 6: Final answer
    x = 425,549.70

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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.