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Finding the Fourth Proportional to 328,047.40, 492,071.10 and 286,575.40

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Solution

The fourth proportional to 328,047.40, 492,071.10 and 286,575.40 is: 429,863.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,047.40 : 492,071.10 = 286,575.40 : x
  2. Step 2: Convert to fraction form
    328,047.40/492,071.10 = 286,575.40/x
  3. Step 3: Cross multiply
    328,047.40x = 492,071.10 × 286,575.40
  4. Step 4: Simplify right side
    328,047.40x = 141,015,472,310.94
  5. Step 5: Solve for x
    x = 141,015,472,310.94/328,047.40
  6. Step 6: Final answer
    x = 429,863.10

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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.