Home / 385,029.47-531,127.36-223,866.71

Finding the Fourth Proportional to 385,029.47, 531,127.36 and 223,866.71

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Solution

The fourth proportional to 385,029.47, 531,127.36 and 223,866.71 is: 308,812.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,029.47 : 531,127.36 = 223,866.71 : x
  2. Step 2: Convert to fraction form
    385,029.47/531,127.36 = 223,866.71/x
  3. Step 3: Cross multiply
    385,029.47x = 531,127.36 × 223,866.71
  4. Step 4: Simplify right side
    385,029.47x = 118,901,730,899.22
  5. Step 5: Solve for x
    x = 118,901,730,899.22/385,029.47
  6. Step 6: Final answer
    x = 308,812.03

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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.