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Finding the Fourth Proportional to 366,877.10, 550,315.65 and 278,303.60

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Solution

The fourth proportional to 366,877.10, 550,315.65 and 278,303.60 is: 417,455.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,877.10 : 550,315.65 = 278,303.60 : x
  2. Step 2: Convert to fraction form
    366,877.10/550,315.65 = 278,303.60/x
  3. Step 3: Cross multiply
    366,877.10x = 550,315.65 × 278,303.60
  4. Step 4: Simplify right side
    366,877.10x = 153,154,826,531.34
  5. Step 5: Solve for x
    x = 153,154,826,531.34/366,877.10
  6. Step 6: Final answer
    x = 417,455.40

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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.