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Finding the Fourth Proportional to 315,911.52, 435,675.60 and 262,111.32

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Solution

The fourth proportional to 315,911.52, 435,675.60 and 262,111.32 is: 361,479.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,911.52 : 435,675.60 = 262,111.32 : x
  2. Step 2: Convert to fraction form
    315,911.52/435,675.60 = 262,111.32/x
  3. Step 3: Cross multiply
    315,911.52x = 435,675.60 × 262,111.32
  4. Step 4: Simplify right side
    315,911.52x = 114,195,506,607.79
  5. Step 5: Solve for x
    x = 114,195,506,607.79/315,911.52
  6. Step 6: Final answer
    x = 361,479.40

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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.