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Finding the Fourth Proportional to 292,280.80, 438,421.20 and 105,224.80

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Solution

The fourth proportional to 292,280.80, 438,421.20 and 105,224.80 is: 157,837.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,280.80 : 438,421.20 = 105,224.80 : x
  2. Step 2: Convert to fraction form
    292,280.80/438,421.20 = 105,224.80/x
  3. Step 3: Cross multiply
    292,280.80x = 438,421.20 × 105,224.80
  4. Step 4: Simplify right side
    292,280.80x = 46,132,783,085.76
  5. Step 5: Solve for x
    x = 46,132,783,085.76/292,280.80
  6. Step 6: Final answer
    x = 157,837.20

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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.