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Finding the Fourth Proportional to 434,036.80, 650,018.40 and 266,075.20

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Solution

The fourth proportional to 434,036.80, 650,018.40 and 266,075.20 is: 398,477.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,036.80 : 650,018.40 = 266,075.20 : x
  2. Step 2: Convert to fraction form
    434,036.80/650,018.40 = 266,075.20/x
  3. Step 3: Cross multiply
    434,036.80x = 650,018.40 × 266,075.20
  4. Step 4: Simplify right side
    434,036.80x = 172,953,775,783.68
  5. Step 5: Solve for x
    x = 172,953,775,783.68/434,036.80
  6. Step 6: Final answer
    x = 398,477.22

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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.