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Finding the Fourth Proportional to 302,061.60, 453,090.80 and 77,421.60

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Solution

The fourth proportional to 302,061.60, 453,090.80 and 77,421.60 is: 116,131.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,061.60 : 453,090.80 = 77,421.60 : x
  2. Step 2: Convert to fraction form
    302,061.60/453,090.80 = 77,421.60/x
  3. Step 3: Cross multiply
    302,061.60x = 453,090.80 × 77,421.60
  4. Step 4: Simplify right side
    302,061.60x = 35,079,014,681.28
  5. Step 5: Solve for x
    x = 35,079,014,681.28/302,061.60
  6. Step 6: Final answer
    x = 116,131.99

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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.