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Finding the Fourth Proportional to 317,659.66, 438,384.63 and 190,332.52

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Solution

The fourth proportional to 317,659.66, 438,384.63 and 190,332.52 is: 262,667.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,659.66 : 438,384.63 = 190,332.52 : x
  2. Step 2: Convert to fraction form
    317,659.66/438,384.63 = 190,332.52/x
  3. Step 3: Cross multiply
    317,659.66x = 438,384.63 × 190,332.52
  4. Step 4: Simplify right side
    317,659.66x = 83,438,851,357.17
  5. Step 5: Solve for x
    x = 83,438,851,357.17/317,659.66
  6. Step 6: Final answer
    x = 262,667.45

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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.