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Finding the Fourth Proportional to 427,110.30, 640,762.65 and 249,525.90

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Solution

The fourth proportional to 427,110.30, 640,762.65 and 249,525.90 is: 374,345.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,110.30 : 640,762.65 = 249,525.90 : x
  2. Step 2: Convert to fraction form
    427,110.30/640,762.65 = 249,525.90/x
  3. Step 3: Cross multiply
    427,110.30x = 640,762.65 × 249,525.90
  4. Step 4: Simplify right side
    427,110.30x = 159,886,876,927.64
  5. Step 5: Solve for x
    x = 159,886,876,927.64/427,110.30
  6. Step 6: Final answer
    x = 374,345.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.