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Finding the Fourth Proportional to 328,037.90, 492,056.85 and 286,565.90

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Solution

The fourth proportional to 328,037.90, 492,056.85 and 286,565.90 is: 429,848.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,037.90 : 492,056.85 = 286,565.90 : x
  2. Step 2: Convert to fraction form
    328,037.90/492,056.85 = 286,565.90/x
  3. Step 3: Cross multiply
    328,037.90x = 492,056.85 × 286,565.90
  4. Step 4: Simplify right side
    328,037.90x = 141,006,714,071.42
  5. Step 5: Solve for x
    x = 141,006,714,071.42/328,037.90
  6. Step 6: Final answer
    x = 429,848.85

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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.