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Finding the Fourth Proportional to 328,077.40, 492,116.10 and 286,605.40

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Solution

The fourth proportional to 328,077.40, 492,116.10 and 286,605.40 is: 429,908.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,077.40 : 492,116.10 = 286,605.40 : x
  2. Step 2: Convert to fraction form
    328,077.40/492,116.10 = 286,605.40/x
  3. Step 3: Cross multiply
    328,077.40x = 492,116.10 × 286,605.40
  4. Step 4: Simplify right side
    328,077.40x = 141,043,131,686.94
  5. Step 5: Solve for x
    x = 141,043,131,686.94/328,077.40
  6. Step 6: Final answer
    x = 429,908.10

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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.