Finding the Fourth Proportional to 311,695,028.04, 430,139,642.64 and 172,471,657.80
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Solution
The fourth proportional to 311,695,028.04, 430,139,642.64 and 172,471,657.80 is: 238,011,166.61
Step by Step Solution
- Step 1: Write the proportion equation
311,695,028.04 : 430,139,642.64 = 172,471,657.80 : x - Step 2: Convert to fraction form
311,695,028.04/430,139,642.64 = 172,471,657.80/x - Step 3: Cross multiply
311,695,028.04x = 430,139,642.64 × 172,471,657.80 - Step 4: Simplify right side
311,695,028.04x = 74,186,897,251,620,368 - Step 5: Solve for x
x = 74,186,897,251,620,368/311,695,028.04 - Step 6: Final answer
x = 238,011,166.61
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.