Finding the Fourth Proportional to 219,110,844.60, 328,666,266.90 and 128,187,631.80
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Solution
The fourth proportional to 219,110,844.60, 328,666,266.90 and 128,187,631.80 is: 192,281,447.70
Step by Step Solution
- Step 1: Write the proportion equation
219,110,844.60 : 328,666,266.90 = 128,187,631.80 : x - Step 2: Convert to fraction form
219,110,844.60/328,666,266.90 = 128,187,631.80/x - Step 3: Cross multiply
219,110,844.60x = 328,666,266.90 × 128,187,631.80 - Step 4: Simplify right side
219,110,844.60x = 42,130,950,406,457,720 - Step 5: Solve for x
x = 42,130,950,406,457,720/219,110,844.60 - Step 6: Final answer
x = 192,281,447.70
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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.