Home / 390,756.74-539,328.38-237,844.13

Finding the Fourth Proportional to 390,756.74, 539,328.38 and 237,844.13

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Solution

The fourth proportional to 390,756.74, 539,328.38 and 237,844.13 is: 328,276.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,756.74 : 539,328.38 = 237,844.13 : x
  2. Step 2: Convert to fraction form
    390,756.74/539,328.38 = 237,844.13/x
  3. Step 3: Cross multiply
    390,756.74x = 539,328.38 × 237,844.13
  4. Step 4: Simplify right side
    390,756.74x = 128,276,085,439.55
  5. Step 5: Solve for x
    x = 128,276,085,439.55/390,756.74
  6. Step 6: Final answer
    x = 328,276.07

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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.