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Finding the Fourth Proportional to 470,088.45, 648,726.72 and 255,230.28

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Solution

The fourth proportional to 470,088.45, 648,726.72 and 255,230.28 is: 352,220.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,088.45 : 648,726.72 = 255,230.28 : x
  2. Step 2: Convert to fraction form
    470,088.45/648,726.72 = 255,230.28/x
  3. Step 3: Cross multiply
    470,088.45x = 648,726.72 × 255,230.28
  4. Step 4: Simplify right side
    470,088.45x = 165,574,702,389.08
  5. Step 5: Solve for x
    x = 165,574,702,389.08/470,088.45
  6. Step 6: Final answer
    x = 352,220.32

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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.