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Finding the Fourth Proportional to 369,685.09, 510,303.41 and 287,851.33

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Solution

The fourth proportional to 369,685.09, 510,303.41 and 287,851.33 is: 397,342.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,685.09 : 510,303.41 = 287,851.33 : x
  2. Step 2: Convert to fraction form
    369,685.09/510,303.41 = 287,851.33/x
  3. Step 3: Cross multiply
    369,685.09x = 510,303.41 × 287,851.33
  4. Step 4: Simplify right side
    369,685.09x = 146,891,515,272.04
  5. Step 5: Solve for x
    x = 146,891,515,272.04/369,685.09
  6. Step 6: Final answer
    x = 397,342.28

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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.