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Finding the Fourth Proportional to 457,203.48, 630,918.88 and 253,240.64

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Solution

The fourth proportional to 457,203.48, 630,918.88 and 253,240.64 is: 349,459.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,203.48 : 630,918.88 = 253,240.64 : x
  2. Step 2: Convert to fraction form
    457,203.48/630,918.88 = 253,240.64/x
  3. Step 3: Cross multiply
    457,203.48x = 630,918.88 × 253,240.64
  4. Step 4: Simplify right side
    457,203.48x = 159,774,300,959.28
  5. Step 5: Solve for x
    x = 159,774,300,959.28/457,203.48
  6. Step 6: Final answer
    x = 349,459.94

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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.