Home / 380,928.52-525,646.02-211,148.20

Finding the Fourth Proportional to 380,928.52, 525,646.02 and 211,148.20

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Solution

The fourth proportional to 380,928.52, 525,646.02 and 211,148.20 is: 291,364.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,928.52 : 525,646.02 = 211,148.20 : x
  2. Step 2: Convert to fraction form
    380,928.52/525,646.02 = 211,148.20/x
  3. Step 3: Cross multiply
    380,928.52x = 525,646.02 × 211,148.20
  4. Step 4: Simplify right side
    380,928.52x = 110,989,210,960.16
  5. Step 5: Solve for x
    x = 110,989,210,960.16/380,928.52
  6. Step 6: Final answer
    x = 291,364.93

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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.