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Finding the Fourth Proportional to 245,430.40, 368,145.60 and 140,454.40

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Solution

The fourth proportional to 245,430.40, 368,145.60 and 140,454.40 is: 210,681.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,430.40 : 368,145.60 = 140,454.40 : x
  2. Step 2: Convert to fraction form
    245,430.40/368,145.60 = 140,454.40/x
  3. Step 3: Cross multiply
    245,430.40x = 368,145.60 × 140,454.40
  4. Step 4: Simplify right side
    245,430.40x = 51,707,669,360.64
  5. Step 5: Solve for x
    x = 51,707,669,360.64/245,430.40
  6. Step 6: Final answer
    x = 210,681.60

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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.