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Finding the Fourth Proportional to 315,167.40, 434,762.64 and 213,058.80

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Solution

The fourth proportional to 315,167.40, 434,762.64 and 213,058.80 is: 293,907.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,167.40 : 434,762.64 = 213,058.80 : x
  2. Step 2: Convert to fraction form
    315,167.40/434,762.64 = 213,058.80/x
  3. Step 3: Cross multiply
    315,167.40x = 434,762.64 × 213,058.80
  4. Step 4: Simplify right side
    315,167.40x = 92,630,006,363.23
  5. Step 5: Solve for x
    x = 92,630,006,363.23/315,167.40
  6. Step 6: Final answer
    x = 293,907.32

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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.