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Finding the Fourth Proportional to 168,012,602.40, 252,018,903.60 and 157,808,935.20

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Solution

The fourth proportional to 168,012,602.40, 252,018,903.60 and 157,808,935.20 is: 236,713,402.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,012,602.40 : 252,018,903.60 = 157,808,935.20 : x
  2. Step 2: Convert to fraction form
    168,012,602.40/252,018,903.60 = 157,808,935.20/x
  3. Step 3: Cross multiply
    168,012,602.40x = 252,018,903.60 × 157,808,935.20
  4. Step 4: Simplify right side
    168,012,602.40x = 39,770,834,827,387,440
  5. Step 5: Solve for x
    x = 39,770,834,827,387,440/168,012,602.40
  6. Step 6: Final answer
    x = 236,713,402.80

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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.