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Finding the Fourth Proportional to 421,831.84, 581,522.52 and 300,763.12

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Solution

The fourth proportional to 421,831.84, 581,522.52 and 300,763.12 is: 414,621.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,831.84 : 581,522.52 = 300,763.12 : x
  2. Step 2: Convert to fraction form
    421,831.84/581,522.52 = 300,763.12/x
  3. Step 3: Cross multiply
    421,831.84x = 581,522.52 × 300,763.12
  4. Step 4: Simplify right side
    421,831.84x = 174,900,527,465.46
  5. Step 5: Solve for x
    x = 174,900,527,465.46/421,831.84
  6. Step 6: Final answer
    x = 414,621.45

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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.