Home / 353,070.60-487,201.02-209,802.98

Finding the Fourth Proportional to 353,070.60, 487,201.02 and 209,802.98

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Solution

The fourth proportional to 353,070.60, 487,201.02 and 209,802.98 is: 289,506.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,070.60 : 487,201.02 = 209,802.98 : x
  2. Step 2: Convert to fraction form
    353,070.60/487,201.02 = 209,802.98/x
  3. Step 3: Cross multiply
    353,070.60x = 487,201.02 × 209,802.98
  4. Step 4: Simplify right side
    353,070.60x = 102,216,225,855.04
  5. Step 5: Solve for x
    x = 102,216,225,855.04/353,070.60
  6. Step 6: Final answer
    x = 289,506.48

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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.