Home / 283,055.04-390,613.08-155,730.72

Finding the Fourth Proportional to 283,055.04, 390,613.08 and 155,730.72

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Solution

The fourth proportional to 283,055.04, 390,613.08 and 155,730.72 is: 214,906.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,055.04 : 390,613.08 = 155,730.72 : x
  2. Step 2: Convert to fraction form
    283,055.04/390,613.08 = 155,730.72/x
  3. Step 3: Cross multiply
    283,055.04x = 390,613.08 × 155,730.72
  4. Step 4: Simplify right side
    283,055.04x = 60,830,456,189.82
  5. Step 5: Solve for x
    x = 60,830,456,189.82/283,055.04
  6. Step 6: Final answer
    x = 214,906.81

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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.