Home / 310,985.03-429,291.76-209,069.60

Finding the Fourth Proportional to 310,985.03, 429,291.76 and 209,069.60

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Solution

The fourth proportional to 310,985.03, 429,291.76 and 209,069.60 is: 288,605.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,985.03 : 429,291.76 = 209,069.60 : x
  2. Step 2: Convert to fraction form
    310,985.03/429,291.76 = 209,069.60/x
  3. Step 3: Cross multiply
    310,985.03x = 429,291.76 × 209,069.60
  4. Step 4: Simplify right side
    310,985.03x = 89,751,857,881.06
  5. Step 5: Solve for x
    x = 89,751,857,881.06/310,985.03
  6. Step 6: Final answer
    x = 288,605.07

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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.