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Finding the Fourth Proportional to 340,831.40, 470,374.40 and 187,896.77

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Solution

The fourth proportional to 340,831.40, 470,374.40 and 187,896.77 is: 259,312.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,831.40 : 470,374.40 = 187,896.77 : x
  2. Step 2: Convert to fraction form
    340,831.40/470,374.40 = 187,896.77/x
  3. Step 3: Cross multiply
    340,831.40x = 470,374.40 × 187,896.77
  4. Step 4: Simplify right side
    340,831.40x = 88,381,830,450.69
  5. Step 5: Solve for x
    x = 88,381,830,450.69/340,831.40
  6. Step 6: Final answer
    x = 259,312.46

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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.