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Finding the Fourth Proportional to 368,489.49, 508,509.54 and 207,344.45

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Solution

The fourth proportional to 368,489.49, 508,509.54 and 207,344.45 is: 286,131.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,489.49 : 508,509.54 = 207,344.45 : x
  2. Step 2: Convert to fraction form
    368,489.49/508,509.54 = 207,344.45/x
  3. Step 3: Cross multiply
    368,489.49x = 508,509.54 × 207,344.45
  4. Step 4: Simplify right side
    368,489.49x = 105,436,628,348.51
  5. Step 5: Solve for x
    x = 105,436,628,348.51/368,489.49
  6. Step 6: Final answer
    x = 286,131.98

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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.