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Finding the Fourth Proportional to 312,006.60, 468,009.90 and 154,259.40

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Solution

The fourth proportional to 312,006.60, 468,009.90 and 154,259.40 is: 231,389.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,006.60 : 468,009.90 = 154,259.40 : x
  2. Step 2: Convert to fraction form
    312,006.60/468,009.90 = 154,259.40/x
  3. Step 3: Cross multiply
    312,006.60x = 468,009.90 × 154,259.40
  4. Step 4: Simplify right side
    312,006.60x = 72,194,926,368.06
  5. Step 5: Solve for x
    x = 72,194,926,368.06/312,006.60
  6. Step 6: Final answer
    x = 231,389.10

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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.