Home / 398,528.48-549,968.73-217,240.76

Finding the Fourth Proportional to 398,528.48, 549,968.73 and 217,240.76

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Solution

The fourth proportional to 398,528.48, 549,968.73 and 217,240.76 is: 299,791.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,528.48 : 549,968.73 = 217,240.76 : x
  2. Step 2: Convert to fraction form
    398,528.48/549,968.73 = 217,240.76/x
  3. Step 3: Cross multiply
    398,528.48x = 549,968.73 × 217,240.76
  4. Step 4: Simplify right side
    398,528.48x = 119,475,624,881.44
  5. Step 5: Solve for x
    x = 119,475,624,881.44/398,528.48
  6. Step 6: Final answer
    x = 299,791.94

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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.