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Finding the Fourth Proportional to 545,547.25, 818,270.39 and 257,292.79

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Solution

The fourth proportional to 545,547.25, 818,270.39 and 257,292.79 is: 385,915.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,547.25 : 818,270.39 = 257,292.79 : x
  2. Step 2: Convert to fraction form
    545,547.25/818,270.39 = 257,292.79/x
  3. Step 3: Cross multiply
    545,547.25x = 818,270.39 × 257,292.79
  4. Step 4: Simplify right side
    545,547.25x = 210,535,070,331.02
  5. Step 5: Solve for x
    x = 210,535,070,331.02/545,547.25
  6. Step 6: Final answer
    x = 385,915.37

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1.5x scale

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.