Home / 389,931.02-584,896.47-212,587.16

Finding the Fourth Proportional to 389,931.02, 584,896.47 and 212,587.16

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Solution

The fourth proportional to 389,931.02, 584,896.47 and 212,587.16 is: 318,880.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,931.02 : 584,896.47 = 212,587.16 : x
  2. Step 2: Convert to fraction form
    389,931.02/584,896.47 = 212,587.16/x
  3. Step 3: Cross multiply
    389,931.02x = 584,896.47 × 212,587.16
  4. Step 4: Simplify right side
    389,931.02x = 124,341,479,451.33
  5. Step 5: Solve for x
    x = 124,341,479,451.33/389,931.02
  6. Step 6: Final answer
    x = 318,880.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.