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Finding the Fourth Proportional to 355,300.02, 490,412.88 and 219,356.10

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Solution

The fourth proportional to 355,300.02, 490,412.88 and 219,356.10 is: 302,772.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,300.02 : 490,412.88 = 219,356.10 : x
  2. Step 2: Convert to fraction form
    355,300.02/490,412.88 = 219,356.10/x
  3. Step 3: Cross multiply
    355,300.02x = 490,412.88 × 219,356.10
  4. Step 4: Simplify right side
    355,300.02x = 107,575,056,746.57
  5. Step 5: Solve for x
    x = 107,575,056,746.57/355,300.02
  6. Step 6: Final answer
    x = 302,772.45

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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.