Home / 258,784.61-357,144.63-145,629.23

Finding the Fourth Proportional to 258,784.61, 357,144.63 and 145,629.23

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Solution

The fourth proportional to 258,784.61, 357,144.63 and 145,629.23 is: 200,980.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,784.61 : 357,144.63 = 145,629.23 : x
  2. Step 2: Convert to fraction form
    258,784.61/357,144.63 = 145,629.23/x
  3. Step 3: Cross multiply
    258,784.61x = 357,144.63 × 145,629.23
  4. Step 4: Simplify right side
    258,784.61x = 52,010,697,465.53
  5. Step 5: Solve for x
    x = 52,010,697,465.53/258,784.61
  6. Step 6: Final answer
    x = 200,980.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.