Home / 313,831.20-470,746.80-288,026.40

Finding the Fourth Proportional to 313,831.20, 470,746.80 and 288,026.40

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Solution

The fourth proportional to 313,831.20, 470,746.80 and 288,026.40 is: 432,039.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,831.20 : 470,746.80 = 288,026.40 : x
  2. Step 2: Convert to fraction form
    313,831.20/470,746.80 = 288,026.40/x
  3. Step 3: Cross multiply
    313,831.20x = 470,746.80 × 288,026.40
  4. Step 4: Simplify right side
    313,831.20x = 135,587,506,115.52
  5. Step 5: Solve for x
    x = 135,587,506,115.52/313,831.20
  6. Step 6: Final answer
    x = 432,039.60

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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.