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Finding the Fourth Proportional to 478,460.71, 717,831.40 and 141,510.23

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Solution

The fourth proportional to 478,460.71, 717,831.40 and 141,510.23 is: 212,306.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,460.71 : 717,831.40 = 141,510.23 : x
  2. Step 2: Convert to fraction form
    478,460.71/717,831.40 = 141,510.23/x
  3. Step 3: Cross multiply
    478,460.71x = 717,831.40 × 141,510.23
  4. Step 4: Simplify right side
    478,460.71x = 101,580,486,515.22
  5. Step 5: Solve for x
    x = 101,580,486,515.22/478,460.71
  6. Step 6: Final answer
    x = 212,306.85

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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.