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Finding the Fourth Proportional to 258,884.55, 357,259.95 and 145,707.30

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Solution

The fourth proportional to 258,884.55, 357,259.95 and 145,707.30 is: 201,075.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,884.55 : 357,259.95 = 145,707.30 : x
  2. Step 2: Convert to fraction form
    258,884.55/357,259.95 = 145,707.30/x
  3. Step 3: Cross multiply
    258,884.55x = 357,259.95 × 145,707.30
  4. Step 4: Simplify right side
    258,884.55x = 52,055,382,712.64
  5. Step 5: Solve for x
    x = 52,055,382,712.64/258,884.55
  6. Step 6: Final answer
    x = 201,075.66

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1.5x scale

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.