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Finding the Fourth Proportional to 478,457.41, 660,263.47 and 260,668.68

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Solution

The fourth proportional to 478,457.41, 660,263.47 and 260,668.68 is: 359,718.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,457.41 : 660,263.47 = 260,668.68 : x
  2. Step 2: Convert to fraction form
    478,457.41/660,263.47 = 260,668.68/x
  3. Step 3: Cross multiply
    478,457.41x = 660,263.47 × 260,668.68
  4. Step 4: Simplify right side
    478,457.41x = 172,110,007,177.12
  5. Step 5: Solve for x
    x = 172,110,007,177.12/478,457.41
  6. Step 6: Final answer
    x = 359,718.55

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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.