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Finding the Fourth Proportional to 338,666.60, 507,999.90 and 306,007.40

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Solution

The fourth proportional to 338,666.60, 507,999.90 and 306,007.40 is: 459,011.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,666.60 : 507,999.90 = 306,007.40 : x
  2. Step 2: Convert to fraction form
    338,666.60/507,999.90 = 306,007.40/x
  3. Step 3: Cross multiply
    338,666.60x = 507,999.90 × 306,007.40
  4. Step 4: Simplify right side
    338,666.60x = 155,451,728,599.26
  5. Step 5: Solve for x
    x = 155,451,728,599.26/338,666.60
  6. Step 6: Final answer
    x = 459,011.10

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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.