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Finding the Fourth Proportional to 154,655,643.60, 231,978,216.60 and 39,641,313.60

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Solution

The fourth proportional to 154,655,643.60, 231,978,216.60 and 39,641,313.60 is: 59,460,625.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,655,643.60 : 231,978,216.60 = 39,641,313.60 : x
  2. Step 2: Convert to fraction form
    154,655,643.60/231,978,216.60 = 39,641,313.60/x
  3. Step 3: Cross multiply
    154,655,643.60x = 231,978,216.60 × 39,641,313.60
  4. Step 4: Simplify right side
    154,655,643.60x = 9,195,921,232,609,326
  5. Step 5: Solve for x
    x = 9,195,921,232,609,326/154,655,643.60
  6. Step 6: Final answer
    x = 59,460,625.03

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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.