Home / 389,368.13-537,328.04-210,520.13

Finding the Fourth Proportional to 389,368.13, 537,328.04 and 210,520.13

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Solution

The fourth proportional to 389,368.13, 537,328.04 and 210,520.13 is: 290,517.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,368.13 : 537,328.04 = 210,520.13 : x
  2. Step 2: Convert to fraction form
    389,368.13/537,328.04 = 210,520.13/x
  3. Step 3: Cross multiply
    389,368.13x = 537,328.04 × 210,520.13
  4. Step 4: Simplify right side
    389,368.13x = 113,118,365,094.20
  5. Step 5: Solve for x
    x = 113,118,365,094.20/389,368.13
  6. Step 6: Final answer
    x = 290,517.78

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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.