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Finding the Fourth Proportional to 487,970.40, 732,075.60 and 168,127.20

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Solution

The fourth proportional to 487,970.40, 732,075.60 and 168,127.20 is: 252,232.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,970.40 : 732,075.60 = 168,127.20 : x
  2. Step 2: Convert to fraction form
    487,970.40/732,075.60 = 168,127.20/x
  3. Step 3: Cross multiply
    487,970.40x = 732,075.60 × 168,127.20
  4. Step 4: Simplify right side
    487,970.40x = 123,081,820,816.32
  5. Step 5: Solve for x
    x = 123,081,820,816.32/487,970.40
  6. Step 6: Final answer
    x = 252,232.15

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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.