Home / 390,006.02-538,208.34-220,251.08

Finding the Fourth Proportional to 390,006.02, 538,208.34 and 220,251.08

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Solution

The fourth proportional to 390,006.02, 538,208.34 and 220,251.08 is: 303,946.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,006.02 : 538,208.34 = 220,251.08 : x
  2. Step 2: Convert to fraction form
    390,006.02/538,208.34 = 220,251.08/x
  3. Step 3: Cross multiply
    390,006.02x = 538,208.34 × 220,251.08
  4. Step 4: Simplify right side
    390,006.02x = 118,540,968,150.01
  5. Step 5: Solve for x
    x = 118,540,968,150.01/390,006.02
  6. Step 6: Final answer
    x = 303,946.51

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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.