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Finding the Fourth Proportional to 290,607.48, 401,048.64 and 163,280.52

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Solution

The fourth proportional to 290,607.48, 401,048.64 and 163,280.52 is: 225,332.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,607.48 : 401,048.64 = 163,280.52 : x
  2. Step 2: Convert to fraction form
    290,607.48/401,048.64 = 163,280.52/x
  3. Step 3: Cross multiply
    290,607.48x = 401,048.64 × 163,280.52
  4. Step 4: Simplify right side
    290,607.48x = 65,483,430,484.49
  5. Step 5: Solve for x
    x = 65,483,430,484.49/290,607.48
  6. Step 6: Final answer
    x = 225,332.91

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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.