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Finding the Fourth Proportional to 455,606.80, 683,410.20 and 243,030.40

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Solution

The fourth proportional to 455,606.80, 683,410.20 and 243,030.40 is: 364,545.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,606.80 : 683,410.20 = 243,030.40 : x
  2. Step 2: Convert to fraction form
    455,606.80/683,410.20 = 243,030.40/x
  3. Step 3: Cross multiply
    455,606.80x = 683,410.20 × 243,030.40
  4. Step 4: Simplify right side
    455,606.80x = 166,089,454,270.08
  5. Step 5: Solve for x
    x = 166,089,454,270.08/455,606.80
  6. Step 6: Final answer
    x = 364,545.60

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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.