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Finding the Fourth Proportional to 415,851.40, 623,777.10 and 330,230.35

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Solution

The fourth proportional to 415,851.40, 623,777.10 and 330,230.35 is: 495,345.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,851.40 : 623,777.10 = 330,230.35 : x
  2. Step 2: Convert to fraction form
    415,851.40/623,777.10 = 330,230.35/x
  3. Step 3: Cross multiply
    415,851.40x = 623,777.10 × 330,230.35
  4. Step 4: Simplify right side
    415,851.40x = 205,990,130,054.99
  5. Step 5: Solve for x
    x = 205,990,130,054.99/415,851.40
  6. Step 6: Final answer
    x = 495,345.53

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Similar ratio
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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.