Home / 388,022.40-535,475.34-218,255.04

Finding the Fourth Proportional to 388,022.40, 535,475.34 and 218,255.04

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Solution

The fourth proportional to 388,022.40, 535,475.34 and 218,255.04 is: 301,194.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,022.40 : 535,475.34 = 218,255.04 : x
  2. Step 2: Convert to fraction form
    388,022.40/535,475.34 = 218,255.04/x
  3. Step 3: Cross multiply
    388,022.40x = 535,475.34 × 218,255.04
  4. Step 4: Simplify right side
    388,022.40x = 116,870,191,750.71
  5. Step 5: Solve for x
    x = 116,870,191,750.71/388,022.40
  6. Step 6: Final answer
    x = 301,194.45

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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.