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Finding the Fourth Proportional to 351,574.16, 485,088.34 and 208,309.48

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Solution

The fourth proportional to 351,574.16, 485,088.34 and 208,309.48 is: 287,417.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,574.16 : 485,088.34 = 208,309.48 : x
  2. Step 2: Convert to fraction form
    351,574.16/485,088.34 = 208,309.48/x
  3. Step 3: Cross multiply
    351,574.16x = 485,088.34 × 208,309.48
  4. Step 4: Simplify right side
    351,574.16x = 101,048,499,859.46
  5. Step 5: Solve for x
    x = 101,048,499,859.46/351,574.16
  6. Step 6: Final answer
    x = 287,417.31

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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.