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Finding the Fourth Proportional to 340,381.60, 509,362.80 and 296,490.40

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Solution

The fourth proportional to 340,381.60, 509,362.80 and 296,490.40 is: 443,681.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,381.60 : 509,362.80 = 296,490.40 : x
  2. Step 2: Convert to fraction form
    340,381.60/509,362.80 = 296,490.40/x
  3. Step 3: Cross multiply
    340,381.60x = 509,362.80 × 296,490.40
  4. Step 4: Simplify right side
    340,381.60x = 151,021,180,317.12
  5. Step 5: Solve for x
    x = 151,021,180,317.12/340,381.60
  6. Step 6: Final answer
    x = 443,681.97

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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.